Finding the Fourth Proportional to 78,086.04, 107,758.78 and 42,276.06

Step by Step Solution

1. Step 1: Write the proportion equation
   78,086.04 : 107,758.78 = 42,276.06 : x
2. Step 2: Convert to fraction form
   78,086.04/107,758.78 = 42,276.06/x
3. Step 3: Cross multiply
   78,086.04x = 107,758.78 × 42,276.06
4. Step 4: Simplify right side
   78,086.04x = 4,555,616,648.81
5. Step 5: Solve for x
   x = 4,555,616,648.81/78,086.04
6. Step 6: Final answer
   x = 58,340.99